Rifamycin S

Research use only, not for human use.

Rifamycin S is a potent DNA-dependent RNA polymerase inhibitoris a quinone and an antibiotic agnet against Gram-positive bacteria.

Rifamycin S is a potent DNA-dependent RNA polymerase inhibitoris a quinone and an antibiotic agnet against Gram-positive bacteria.(In Vitro):The inhibition of bacterial growth by Rifamycin SV is due to the production of active species of oxygen resulting from the oxidation-reduction cycle of Rifamycin SV in the cells. The aerobic oxidation of Rifamycin SV to Rifamycin S is induced by metal ions, such as Mn2+, Cu2+, and Co2+. The most effective metal ion is Mn2+.(In Vivo):Rat liver sub-mitochondrial particles also generated hydroxyl radical in the presence of NADH and Rifamycin S. NADH dehydrogenase (complex I) as the major component involved in the reduction of Rifamycin S. Compared to NADPH, NADH is almost as effective (Rifamycin S) in catalyzing the interactions of these antibiotics with rat liver microsomes. Rifamycin S is shown to be readily reduced to Rifamycin SV, the corresponding hydroquinone by Fe(II). Rifamycin S forms a detectable Fe(II)-(Rifamycin S)3 complex. The Fe:ATP induced lipid peroxidation is completely inhibited by Rifamycin S. Rifamycin S can interact with rat liver microsomes to undergo redox-cycling, with the subsequent production of hydroxyl radicals when iron complexes are present.

The inhibition of bacterial growth by Rifamycin SV is due to the production of active species of oxygen resulting from the oxidation-reduction cycle of Rifamycin SV in the cells. The aerobic oxidation of Rifamycin SV to Rifamycin S is induced by metal ions, such as Mn2+, Cu2+, and Co2+. The most effective metal ion is Mn2+.

Rat liver sub-mitochondrial particles also generated hydroxyl radical in the presence of NADH and Rifamycin S. NADH dehydrogenase (complex I) as the major component involved in the reduction of Rifamycin S. Compared to NADPH, NADH is almost as effective (Rifamycin S) in catalyzing the interactions of these antibiotics with rat liver microsomes. Rifamycin S is shown to be readily reduced to Rifamycin SV, the corresponding hydroquinone by Fe(II). Rifamycin S forms a detectable Fe(II)-(Rifamycin S)3 complex. The Fe:ATP induced lipid peroxidation is completely inhibited by Rifamycin S. Rifamycin S can interact with rat liver microsomes to undergo redox-cycling, with the subsequent production of hydroxyl radicals when iron complexes are present.

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GPCR/G Protein

Antibacterial

Bacterial|ROS

Metabolic Disease

Traveler's Diarrhea

13553-79-2

695.75

C37H45NO12

>98% (HPLC)

DMSO:250 mg/mL (359.32 mM; Need ultrasonic)

CO[C@H]1\C=C\O[C@@]2(C)Oc3c(C2=O)c2C(=O)C=C(NC(=O)\C(C)=C/C=C/[C@H](C)[C@H](O)[C@@H](C)[C@@H](O)[C@@H](C)[C@H](OC(C)=O)[C@@H]1C)C(=O)c2c(O)c3C

27-(Epoxypentadeca(11113)trienimino)naphtho(21-b)furan-16911(2H)-tetrone 5171921-tetrahydroxy-23-methoxy-241216182022-heptamethyl- 21-acetate

(-20℃)

With Ice Pack

≥ 2 years